Fri, Sep 29, 2017 11:04 pm

I received a zip file containing data captured with
tcpdump on
a Linux system. When I tried to open the zip file on my
MacBook Pro
laptop running OS X El Capitan by double-clicking on the file within the
Finder,
I saw an "unable to expand" error message stating "Error 2 - No such file or
directory." A Microsoft Windows user who downloaded the same zip file reported
that he was unable to open it, either. When I tried to unzip the file from
a
Terminal window using the
unzip utility, I saw an "End-of-central directory signature not found" error
message.

$ file AS2_Captures.zip
AS2_Captures.zip: Zip archive data, at least v2.0 to extract
$ unzip AS2_Captures.zip
Archive: AS2_Captures.zip
End-of-central-directory signature not found. Either this file is not
a zipfile, or it constitutes one disk of a multi-part archive. In the
latter case the central directory and zipfile comment will be found on
the last disk(s) of this archive.
unzip: cannot find zipfile directory in one of AS2_Captures.zip or
AS2_Captures.zip.zip, and cannot find AS2_Captures.zip.ZIP, period.
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